858 B
858 B
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| Notches |
There are two types of notches. The default notch is a dot in a circle.
An alternative style shows a cross in a circle. This style is used to indicate the back of a garment. For example, on a sleevecap you may see a dot and a cross notch. This way you know which side of the sleevecap is the back (the one with the cross notch).
The default notch style (shown left) and alternative style for notches on the back
Why we chose these notches
In electromagnetism, a ⊙ symbol is used to indicate a flow of current coming towards you (to the front), whereas ⊗ is used for a current moving away from you (to the back).
You can also think of an arrow. When an arrow flies towards you, you see its tip (⊙). When an arrow flies away from you, you see its fletches (⊗).